scholarly journals Behavior of High-Temperature Embrittlement and Its Mechanism in Heat-Affected Zone of Low-Carbon Alloy Steels

2013 ◽  
Vol 54 (8) ◽  
pp. 1429-1436
Author(s):  
Suguru Yoshida ◽  
Teruhisa Okumura ◽  
Hiroshi Kita ◽  
Kohsaku Ushioda ◽  
Yoshio R. Abe
Keyword(s):  
High Temperature ◽  
Heat Affected Zone ◽  
Low Carbon ◽  
Alloy Steels

scholarly journals Behavior of High Temperature Embrittlement and Its Mechanism in Heat Affected Zone of Low-Carbon Alloy Steels

2012 ◽  
Vol 76 (3) ◽  
pp. 182-188
Author(s):  
Suguru Yoshida ◽  
Teruhisa Okumura ◽  
Hiroshi Kita ◽  
Kohsaku Ushioda ◽  
Yoshio R. Abe
Keyword(s):  
High Temperature ◽  
Heat Affected Zone ◽  
Low Carbon ◽  
Alloy Steels

Recent Aspects on the Effect of Inclusion Characteristics on the Intragranular Ferrite Formation in Low Alloy Steels: A Review

2017 ◽  
Vol 36 (4) ◽  
pp. 309-325 ◽  
Author(s):  
Wangzhong Mu ◽  
Pär Göran Jönsson ◽  
Keiji Nakajima
Keyword(s):  
Heat Affected Zone ◽  
Low Alloy Steels ◽  
Low Carbon ◽  
Intragranular Ferrite ◽  
Metallic Inclusions ◽  
Theoretical Investigations ◽  
Alloy Steels ◽  
Institute Of Technology ◽  
Future Work

AbstractIntragranular ferrite (IGF), which nucleates from specific inclusion surfaces in low alloy steels, is the desired microstructure to improve mechanical properties of steel such as the toughness. This microstructure is especially important in the coarse grain heat affected zone (CGHAZ) of weldments. The latest review paper focusing on the role of non-metallic inclusions in the IGF formation in steels has been reported by Sarma et al. in 2009 (ISIJ int., 49(2009), 1063–1074). In recent years, large amount of papers have been presented to investigate different issues of this topic. This paper mainly highlights the frontiers of experimental and theoretical investigations on the effects of inclusion characteristics, such as the composition, size distribution and number density, on the IGF formation in low carbon low-alloyed steels, undertaken by the group of Applied Process Metallurgy, KTH Royal Institute of Technology. Related results reported in previous studies are also introduced. Also, plausible future work regarding various items of IGF formation is mentioned in each section. This work aims to give a better control of improving the steel quality during casting and in the heat affected zone (HAZ) of weldment, according to the concept of oxide metallurgy.

Creep Rupture Properties of High-Temperature Bainitic Steels After Weld Repair

2000 ◽  
Vol 122 (3) ◽  
pp. 259-263 ◽  
Author(s):  
J. E. Indacochea ◽  
G. Wang ◽  
R. Seshadri ◽  
Y. K. Oh
Keyword(s):  
High Temperature ◽  
Heat Affected Zone ◽  
Elevated Temperatures ◽  
Rupture Life ◽  
Creep Rupture ◽  
Welding Parameters ◽  
Structure Stability ◽  
Rotor Steel ◽  
Bainitic Steels ◽  
Alloy Steels

Welded high-temperature power plant components can experience a greater risk of failure by creep during service, when compared to similar as-wrought components. The heat-affected zone (HAZ) of alloy steels is usually the region of a weldment exhibiting poor mechanical properties. The arc welding of an ASTM A470, Class 8-rotor steel in this study identified the intercritical heat affected zone (ICHAZ) as the weakest region in terms of creep rupture life. The type of welding procedure significantly affects this region, but most important are the welding parameters utilized. Because of the microstructural heterogeneity of the HAZ and sensitivity of these microstructures to changes when exposed to elevated temperatures, their performance at later times is difficult to predict. Extrapolation techniques are limited in value for predicting service lives of homogeneous materials, because these do not incorporate the microstructure changes of the materials during high temperature operation. They are even less useful for predicting the operating lives of weldments. This paper considers the creep performance and structure stability of the ICHAZ of 12 percent Cr and 214-1Mo vanadium modified weldments produced on a retired CrMoV rotor steel. [S0094-4289(00)00303-0]

Study on microstructure of low carbon 12% chromium stainless steel in high temperature heat-affected zone

2010 ◽  
Vol 31 (10) ◽  
pp. 4836-4841 ◽  
Author(s):  
Huaibei Zheng ◽  
Xiaoning Ye ◽  
Laizhu Jiang ◽  
Baosen Wang ◽  
Zhenyu Liu ◽  
...  
Keyword(s):  
Stainless Steel ◽  
High Temperature ◽  
Heat Affected Zone ◽  
Low Carbon ◽  
Temperature Heat ◽  
Chromium Stainless Steel

CARPENTER STAINLESS No. 20 and 20-Cb

Alloy Digest ◽  
1957 ◽  
Vol 6 (11) ◽  
Keyword(s):  
Corrosion Resistance ◽  
High Temperature ◽  
Physical Properties ◽  
Chromium Content ◽  
Heat Treating ◽  
Low Carbon ◽  
Temperature Performance ◽  
High Nickel ◽  
Alloy Steels ◽  
Strong Acids

Abstract CARPENTER STAINLESS No. 20 and No. 20-Cb are wrought low carbon austenitic alloy steels of high nickel and chromium content. They are highly resistant to hot and cold strong acids. No. 20-Cb contains columbium for carbide stabilization and retention of its corrosion resistance in the as-welded condition. This datasheet provides information on composition, physical properties, hardness, and tensile properties as well as creep. It also includes information on high temperature performance and corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: SS-63. Producer or source: Carpenter.

NICROFER 5923 HMo-ALLOY 59

Alloy Digest ◽  
1993 ◽  
Vol 42 (5) ◽  
Keyword(s):  
Corrosion Resistance ◽  
High Temperature ◽  
Physical Properties ◽  
Heat Treating ◽  
Face Centered Cubic ◽  
Low Carbon ◽  
High Alloy ◽  
Temperature Performance ◽  
Cubic Structure ◽  
Face Centered

Abstract NICROFER 5923 hMo, often called Alloy 59, was developed with extra low carbon and silicon contents and with a high alloy level of molybdenum to optimize its corrosion resistance. Nicrofer 5923hMo has a face-centered cubic structure. This datasheet provides information on composition, physical properties, elasticity, and tensile properties. It also includes information on high temperature performance as well as forming, heat treating, and joining. Filing Code: Ni-430. Producer or source: VDM Technologies Corporation.

HASTELLOY ALLOY B-2

Alloy Digest ◽  
1977 ◽  
Vol 26 (9) ◽  
Keyword(s):  
Corrosion Resistance ◽  
High Temperature ◽  
Physical Properties ◽  
Stress Corrosion Cracking ◽  
Heat Affected Zone ◽  
Chemical Process ◽  
Heat Treating ◽  
Cabot Corporation ◽  
Temperature Performance ◽  
Excellent Corrosion Resistance

Abstract HASTELLOY alloy B-2 has outstanding corrosion resistance in the as-welded condition. It is an improved wrought version of HASTELLOY alloy B with the same excellent corrosion resistance as alloy B, but with improved resistance to knife line and heat-affected zone attack. Alloy B-2 resists the formation of grain-boundry carbide precipitates in the weld heat-affected zone, thus making it suitable for most chemical process applications in the as-welded condition. This alloy also has excellent resistance to pitting and stress-corrosion cracking. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on high temperature performance and corrosion resistance as well as forming, heat treating, machining, joining, and surface treatment. Filing Code: Ni-249. Producer or source: Stellite Division, Cabot Corporation.

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